# Help me with transcode buffering issue when burn subtitles on specific devices!

**URL:** <https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567>\
**Category:** General Discussions\
**Tags:** server-linux, android-tv, ios-legacy, smart-tv, xbox, subtitles, player-mac\
**Created:** [August 23, 2022, 1:48am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567 "2022-08-23T01:48:25Z")\
**Posts on this page:** 20\
**Page:** 1

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**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 1:48am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/1 "2022-08-23T01:48:25Z")

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Hello fellows and Plex team,  
Recently,I‘ve been experienced some weird issues when trying to play movies with PGS or ASS subtitles,My PMS is running on a pretty powerful linux machine as a docker container from [linuxserver.io](http://linuxserver.io) ,and it has an E3-1231v3 cpu and a GTX1650 graphic card, and it also runs a Jellyfin server for my friends.it has been worked perfectly fine with Hardware acceleration enabled, even when transcoding some high-bitrate Remux files.  
But I noticed that when using specific client devices playing same video ,the Server just can’t run fast enough, here is a list of results:  
Plex on Xbox series X —buffering  
Plex on LG C2— buffering  
Plex on ChromeCast with google TV—buffering  
Plex on Mac—fine  
Plex on iPhone—fine  
Plex on iPad—fine  
Plex for HTPC----buffering  
Jellyfin on any devices—FINE  
Its is weird ,because I test them with same setting: force burn PGS subtitles and transcode to 20Mbps 1080p.

Anyways ,SORRY for my English! and appreciate if anyone can help me fix it or tell me why.

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**Author:** ![BigWheel](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/bigwheel/32/78783_2.png) [@BigWheel](https://forums.plex.tv/u/BigWheel)\
**Post date:** [August 23, 2022, 1:56am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/2 "2022-08-23T01:56:08Z")

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> [@TucoBruto](#):
>
> Its is weird ,because I test them with same setting: force burn PGS subtitles and transcode to 20Mbps 1080p.

does it work at all if you use a lower bitrate?

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 2:02am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/5 "2022-08-23T02:02:38Z")

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> [@BigWheel](#):
>
> > [@TucoBruto](#):
> >
> > Its is weird ,because I test them with same setting: force burn PGS subtitles and transcode to 20Mbps 1080p.
> 
> does it work at all if you use a lower bitrate?

no, Still buffering, and the server has low cpu gpu usage ,and low disk read speed , it does will play after buffering but only for seconds, then go on buffering.

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<div class="post-metadata">

**Author:** ![BigWheel](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/bigwheel/32/78783_2.png) [@BigWheel](https://forums.plex.tv/u/BigWheel)\
**Post date:** [August 23, 2022, 2:10am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/6 "2022-08-23T02:10:42Z")

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Just so understand, they play fine on those devices when subtitles are not enabled?

Like what happens if subtitles disabled and you set it to transcode to 20mbps/1080p ?

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 2:27am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/7 "2022-08-23T02:27:54Z")

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> [@BigWheel](#):
>
> Just so understand, they play fine on those devices when subtitles are not enabled?
> 
> Like what happens if subtitles disabled and you set it to transcode to 20mbps/1080p ?

it will work perfectly fine on any devices.

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 2:33am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/8 "2022-08-23T02:33:24Z")

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> [@BigWheel](#):
>
> Just so understand, they play fine on those devices when subtitles are not enabled?
> 
> Like what happens if subtitles disabled and you set it to transcode to 20mbps/1080p ?

the problem is,Jellyfin on the same server can handle any of these,I dont understand why,'cause they share the same GPU, it’s like so they use different transcoder?

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**Author:** ![Divideby0](https://avatars.discourse-cdn.com/v4/letter/d/74df32/32.png) [@Divideby0](https://forums.plex.tv/u/Divideby0)\
**Post date:** [August 23, 2022, 3:20am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/10 "2022-08-23T03:20:47Z")

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Does it transcode those files with subs on jellyfin? Perhaps the player for Jellyfin has support for those sub types, while some on Plex still don’t.

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 3:22am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/11 "2022-08-23T03:22:15Z")

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> [@Divideby0](#):
>
> Does it transcode those files with subs on jellyfin? Perhaps the player for Jellyfin has support for those sub types, while some on Plex still don’t.

YES,I forced subttile burn-in in Jellyfin ,and I can ensure that it was server who did the rendering.

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<div class="post-metadata">

**Author:** ![BigWheel](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/bigwheel/32/78783_2.png) [@BigWheel](https://forums.plex.tv/u/BigWheel)\
**Post date:** [August 23, 2022, 3:23am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/12 "2022-08-23T03:23:50Z")

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> [@TucoBruto](#):
>
> it’s like so they use different transcoder?

yeah they would not have the same transcoder as us.

PS. You don’t need to quote a reply just above yours. that is what we all assume you are replying to.

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 3:25am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/13 "2022-08-23T03:25:58Z")

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sorry,still new to this forum.got it.

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<div class="post-metadata">

**Author:** ![BigWheel](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/bigwheel/32/78783_2.png) [@BigWheel](https://forums.plex.tv/u/BigWheel)\
**Post date:** [August 23, 2022, 3:28am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/14 "2022-08-23T03:28:26Z")

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PGS subtitles should be able play on LG UHD sets at least without transcoding now in 5.44.3 if you set to `automatic` but I know that does not help with ASS subtitles

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 3:30am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/15 "2022-08-23T03:30:18Z")

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but it is really an issue,diffrent clients cause a diverse server performece,it must be a bug or something.

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 3:30am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/16 "2022-08-23T03:30:50Z")

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wow,that’s is really nice,thanks for the information.

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<div class="post-metadata">

**Author:** ![Havohej](https://avatars.discourse-cdn.com/v4/letter/h/e47774/32.png) [@Havohej](https://forums.plex.tv/u/Havohej)\
**Post date:** [August 23, 2022, 11:29am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/17 "2022-08-23T11:29:21Z")

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Subtitles support in Plex is very poor and it has become even worse in the last couple of years. I do not think they will fix it, it has been like that from the beginning.

Sometimes just having subtitles there but NOT activating them would still cause transcoding. Plex argument: We start transcoding even if you are not using the subtitles because you might decide to activate them later on.

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 23, 2022, 11:44am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/18 "2022-08-23T11:44:41Z")

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All subtitles burning pretty fine without any issue on all of my mobile devices,but for TVs and Game Consoles,it sucks,I dont know why,but jellyfin just did it well ,so i think this is a bug tiggerd by specific situation.AND IT NEEDS TO BE FIXED!

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<div class="post-metadata">

**Author:** ![BigWheel](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/bigwheel/32/78783_2.png) [@BigWheel](https://forums.plex.tv/u/BigWheel)\
**Post date:** [August 23, 2022, 2:49pm UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/19 "2022-08-23T14:49:34Z")

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Can you turn on logging to server in the LG app or Xbox and reproduce issue then get the [server logs.](https://support.plex.tv/articles/200250417-plex-media-server-log-files/)

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 24, 2022, 12:37am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/20 "2022-08-24T00:37:01Z")

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okay,I will try it tonight,I’m at work now,thanks for that.

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 24, 2022, 2:22am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/21 "2022-08-24T02:22:13Z")

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[Plex Media Server.log](https://forums.plex.tv/uploads/short-url/dp3ltFLOQhAUJKkfO4GJVR0VlkB.log) (617.0 KB)

Around 09:59 local time,I played the movie,it started to buffer,then I changed resolution to 1080p 20Mbps,it buffered for seconds before playing,then the stutters came up.

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 24, 2022, 2:32am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/22 "2022-08-24T02:32:04Z")

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And I played the same movie on jellyfin with the same settings(Burned in the same PGS subtitles 1080p 20Mbps), no issue.

 ![截屏2022-08-24 10.29.30](https://global.discourse-cdn.com/plex/original/4X/8/9/a/89aae87d90c787c4a5ff4960a6794bbbd3545983.png)

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<div class="post-metadata">

**Author:** ![TucoBruto](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/tucobruto/32/285690_2.png) [@TucoBruto](https://forums.plex.tv/u/TucoBruto)\
**Post date:** [August 29, 2022, 5:34am UTC](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567/23 "2022-08-29T05:34:37Z")

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It’s been a week,any updates？

[Next page](https://forums.plex.tv/t/help-me-with-transcode-buffering-issue-when-burn-subtitles-on-specific-devices/805567.md?page=2)
